RF interference on allen heath zed 24

[mixx]

hi mga masters

nag setup ako kagabi sa penthouse ng 1 building sa ortigas and to my nightmare pumapasok yung FM sa A&H mixer ko, whats a good work around? meron bang sira yung mixer ko? so far tested all the cables and theyre all fine, na isolate ko na sa A&H yung problema kasi nung i connect ko sa Ecler DJ mixer malinis naman yung tunog

btw eto po main setup ko:

A&H ZED24 mixer
EV LiveX powered speakers
EVr300 wireless mics

need your expert advises mga bossing

[jeo]

Plug to a clean filtered/conditioned power source and clamp(ground) to any metal that is earthened. Got same problem before where the set-up is near gma7

[mixx]

Plug to a clean filtered/conditioned power source and clamp(ground) to any metal that is earthened. Got same problem before where the set-up is near gma7

thanks sir will try a power conditioner on the next gig, paano sir kung wlang option ng grounding?

[mikep]

The Ortigas area is really a big problem for audio set ups because of the high power FM transmitters in the area that are always over modulated and spew harmonics.  Best way to avoid it is to use three pronged or balanced input/output jacks or XLRs and sources.  The attraction of interference would normally be from unbalanced sources like cassettes, CDs, MDs, etc.  Grounding would be best but if not available, RF beads are an option.  These are placed in between the solder points of the connector section of the unbalanced sources.  What can also help is to reposition the equipment and the wires in a way that they would not attract as much RF.  Wires and connectors would normally act as antennas, thus repositioning them in such a way as not to accept much interference sometimes solve the problem.

[ronaldium]

+1 to sir mikep! Naexperience ko na rin yan, try the earth grounding method....one funny thing you can do with the rf interference, try mo iwagayway ng konti yung cable, makakapili ka ng station na gusto mo...hehehehe... 

[mixx]

thanks mga masters sa reply

anyways was using all balanced connection, my only suspect is baka corroded or me amag yung mga terminals (XLR) nung A&H kaya pumapasok RFI, nung isaksak ko sa Ecler DJ mixer(XLR) totally wala sya, so ginawa ko main yung dj mixer then a&h yung slave medyo katay nga lng sa gain(a&h) sa mics kasi pumapasok RFI.

[ryanbairan]

sir na try mo yung mixer pag walang naka plug na mic mixer lng then output to your audio? pag sa headphone lang ba my nasasagap padin na FM? minsan nang yari na skin yan sa rooftop din ako yung mga mic wire ko since mahaba yung iba naka roll, nung kinalat ko na wala yung nasasagap na FM kasi yung mga wire natin nagiging coil yung pag naka roll tapos my mic sa dulo,

[mixx]

sir na try mo yung mixer pag walang naka plug na mic mixer lng then output to your audio? pag sa headphone lang ba my nasasagap padin na FM? minsan nang yari na skin yan sa rooftop din ako yung mga mic wire ko since mahaba yung iba naka roll, nung kinalat ko na wala yung nasasagap na FM kasi yung mga wire natin nagiging coil yung pag naka roll tapos my mic sa dulo,

sir na try ko mixer>powered spkrs lng wlang naka kabit sa line maski wire, meron pa rin sagap, pag angat mo ng line fader ayun lumalakas pa lalo, powered speaker alone malinis maski naka kabit yung cable(disconected from mixer), medyo sakit sa ulo lng kasi regular gigs kmi dun

[ryanbairan]

ganyan din nga yung zed24 ko noon
my onting sagap ng spirit live II n lng ako, try niyo na lng po mg earth ground,